Home / 117,617,509.12-162,288,376.80-68,715,489.28

Finding the Fourth Proportional to 117,617,509.12, 162,288,376.80 and 68,715,489.28

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Solution

The fourth proportional to 117,617,509.12, 162,288,376.80 and 68,715,489.28 is: 94,813,478.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,617,509.12 : 162,288,376.80 = 68,715,489.28 : x
  2. Step 2: Convert to fraction form
    117,617,509.12/162,288,376.80 = 68,715,489.28/x
  3. Step 3: Cross multiply
    117,617,509.12x = 162,288,376.80 × 68,715,489.28
  4. Step 4: Simplify right side
    117,617,509.12x = 11,151,725,216,269,002
  5. Step 5: Solve for x
    x = 11,151,725,216,269,002/117,617,509.12
  6. Step 6: Final answer
    x = 94,813,478.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.